JVC RC-EZ31BB, Service Manual

Page: 16 / 26

2-16
5.2.2 Front section
CN702
5
4
3
2
1
CN701
T
O
CD BOARD CN903
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
T
O
AUDIO BOARD CN710
R722
27K
R726
1K
R727
1K
1K R728
R701 100
R710
R702
100
100
100P
102
C701
C716
C724
680P
R744
100
D704
L702
IN4148 100UH
R731 R732
R745 47K 47K
47K
47K 47K
47K
R721
R752
R735
B03
R725
10K
R734
3.3K
D703
IN4148
LED701
Standby
R733
10K
LED702
Amber Back Light
B02 B04 B01
R754 R753
47K
47K
COM[01:04]
COM01
COM02
COM03
COM04
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
COM1
COM2
COM3
COM4
P_ PCON(0 ,CM)
VSS3
VDD3
AMUTE(0,CM)
P_ TU( 0 ,Nch)
P_ CD( 0 ,Nch)
IF_ IN(0 ,Nch)
TR_ M- ( 0 ,Nch)
TR_ M+ ( 0 ,Nch)
CD_ RST( 0 ,Nch)
CD_ CE( 0 ,Nch)
TUEV_ CE( 0 ,Nch)
CD_ CMD(0 ,CM)
CD_ DATA ( I,-)
CD_ CLK
IF_ CLK( 0 ,CM) / TX
R729
R730
1K
1K
60 59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21
20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2
1
S30 S29 S28 S27 S26 S25 S24 S23 S22 S21 S20 S19 S18 S17 S16
JOG+(I,ex-PU)
JOG-(I,ex-PU)
SYN_REC(I,ex-PU)
S32 S31 S30 S29 S28 S27 S26 S25 S24 S23 S22 S21 S20 S19 S18
S17 S16
VSS2
VDD2
S15
S14
S13
S12
S11
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1
S15
S14
S13
S12
S11
S10
S9
S8
S7
S6
S5
S4
S3
S2
S1
ZD701
3.9V
IF_OUT (I, -) / RX TUEV_DI(0,CM) TUEV_D0( I, -) TUEV_CL(0,CM)
/RES(I,ex- PU)
XT1(I) XT2( 0) VSS1 CF1(I) CF2( 0) VDD1 OPT_CT
(I, - )
IF_ RST(0,Nch) OPT_SYS1(I, - ) KEY0( I,- ) KEY2( I,- ) SW_CD( I,-) V_CHK( I,-) IF_REQ( I,-) KEY1( I,- )
IR(I,-)
ST(I,-)
V_GND(0,CM)
IC701
LC877C64C-57K1
C723 C722
C721
680P
680P 680P
100
100
100
R741 R742
R743
X701
32.768KHz
C709 15P
15P C708
C71
1
22P
C710 22P
C702
102
R723 4.7M
R724 680K
X702
8MHz
R706
R707
68K
R708
R71
1
R750
4.7K
4.7K
4.7K
6.8K
R705
56K
102
C704
C707
102
R751
R736 5.6K
390
R715 10K
D702
IN4148
R717 100K
Q702
9014
- +
2.2UF
C714
R714 47K
Q703
9015
Q704
9015
R720 1K
D705
IN4148
L701
100UH
C715
102
C720
102
R716 47K
C703 104
D701
IN4148
R718
10K
R719 100K
C713
2200UF
+
-
R712
3.3K
R713
47K
C706
102
C705 102
R738
820
R737 3.3K
R709 R709 390
R703
3.9K
R791 R792 R793
4.7K 6.8K 8.2K 10K 12K
R794 R795
SW701 SW702 SW703 SW708 SW704
SW705
PLAY RANDOM DISPLAY FOLDER-
STOP F.B.
F.F.
SW707
SW706
Q701
9015
R704
47K
JP1
US1
US2 EU1 EU2 EU3 AS
C718
220UF
+
-
C719
104
R739 R740 R746
3K
1.2K
2K
C717
680P
R749
100 B05
B06
CN704
1
2 2
1
C712
104
REM701
COM04
COM03
COM02 COM01
34
33
32
31
30 29 28 27 26 25
S30 S29 S28 S27 S26 S25 S24 S23 S22
24 23 22
21
20 19
18
17 16
S21
S20
S19 S18 S17 S16 S15 S14 S13 S12
15
14
13 12
11
10
9 8 7
6
S1
1
S10 S9 S8 S7 S6 S5 S4 S3 S2
5
4
3
2 1
S1
S[1: 34]
LCD701
MP3 MP3
USB
WMA
TRACK FOLDER
STEREO
REPEAT
HBS
ALL
ROCK JAZZ POP
RANDOM PROGRAM
CLASSIC
INTRO
SLEEP
kHz
MHz
B[ 01:06]
B01
B02
B03
B04
B05
B06
CN703
1
2
3
4
5
6
7
8
9
10
10
9
8
7
6
5
4
3
2
1
CN706
B01
B02
B03
B04
B05
B06
B[01:06]
CN708
TO TUNER BOARD CN102
5 4 3 2
1
B01 B02 B03 B04 B05 B06
2
1
CN707
TO BEAT CUT BOARD CN711
R785 R783
2.2K 3.9K
SW714
PRESER UP
REPEAT
SW713
FM MODE
SW716
TUNER SW717
TAPE
SW718 SW715
EQ
PROGR
/CLK
R786 R784
390 1.2K
R787
4.7K
R782 R781
3.3K
1.2K
R780
4.7K
SW709
STANDBY
SW710
VOL UP
SW711
VOL DOWN
SW712
HBS
CN709
R747 R748
1.2K 470